पंजीकृत कार्ाालर् :शक्तत सदन, कोटला रोड़, न्र्ू ददल्ली-110002
(Regd. Office Shakti Sadan, Kotla Road, New Delhi-110002)
कार्ाालर् उपमहाप्रबंधक (एस.ओ.)
Office of Dy. General Manager (SO)
एस एल डी सी बबक्ल्डंग, ममंटो रोड़, न्र्ू ददल्ली-110002
SLDC Building, Minto Road, New Delhi-110002
Ph: 23221175, 23221099, 23221098 FAX No.23221012
No. F./DTL/207/13-14/DGM(SO)/71
Subject :
Dated : 26.07.2013
Minutes of the Meeting held on 05.06.2013 at SLDC to discuss about
Transmission & Distribution constraints
Dear Sir
The Minutes of the Meeting held on 05.06.2013 at SLDC to discuss about Transmission &
Distribution constraints and to evolve strategy to overcome these constraints to meet the
upcoming summer demand is enclosed for ready reference and further necessary action please.
Thanking you,
भवदीय / Yours faithfully
Encl. as above
(उपमहाप्रबंधक (एस.ओ.)/Dy. G. M. (SO)
To
1. Executive Director (Engineering), DERC, Shivalik, New Delhi-110017
2. G. M. (SLDC), SLDC Building, Minto Road, New Delhi-110002
3. General Manager (Planning), DTL, Shakti Deep Bldg. Jhandewallan, New Delhi-55
4. General Manager (O&M)-I, DTL, Parkstreet, 220kV S/Stn.,New Delhi
5. General Manager (O&M)-II, DTL, Jhandewalan, Delhi-110055
6. General Manager (Project)-I, DTL, Jhandewalan, Delhi-110055
7. General Manager (Project)-II, DTL, Jhandewalan, Delhi-110055
8. General Manager (C&RA), DTL, IP Estate, Vikas Marg, New Delhi-110002
9. General Manager, (C&MM),DTL, RPH, New Delhi-110002
10. General Manager (Civil), 220kV S/stn Bldg, Lodhi Road, New Delhi-110003
11. Chief Engineer (Elect.), NDMC, Palika Kendra, New Delhi-110001
12. Sh. Chaman Lal, SE(E-II&IV), 17th Floor, Palika Kendra, New Delhi-110001
13. Chief Engineer (Utilities),CWE,MES, Kotwali Road, Delhi Cantt New Delhi-10
14. Sh. A. K. Sharma, Head (O&M), BYPL, Shakti Kiran Bldg., Karkadooma, Delhi15. Sh. Mukesh Dadhich, DGM(SO), BYPL, Balaji Estate, Kalkaji, New Delhi-110019
16. Sh. Chandra Mohan, Sr. Consultant, BRPL, BSES Bhawan, Nehru Place, New Delhi-19
17. Sh. Arvind Gujral, Sr.VP (Head-O&M),BRPL,BSES Bhawan, Nehru Place,New Delhi-19
18. Sh. Ajay Kumar, VP(PMG/Const/Plg),BRPL, BSES Bhawan, Nehru Place, New Delhi-19
19. Sh. S. S. Sondhi, AVP(SO), BRPL, Balaji Estate, Kalkaji, New Delhi-110019
20. Sh. Sanjay Srivastava, AVP (PMG), BRPL, PMG Office, Second Floor, BSES Bhawan,
Nehru Place, New Delhi-110019
21. Sh. Sunil Kakkar, Head (PMG), BYPL, Shakti Kiran Building, Karkardooma, Delhi-92
22. Sh. Ashish Kumar Dutta, AGM(PMG), TPDDL, Hudson Lines, Kingsway Camp, Delhi-09
23. Sh. H.C.Sharma, HoD(Engg), TPDDL, 33kV Hudson Lane S/stn Bldg, Kingsway Camp,
Delhi-110009
24. Sh. Sanjay Banga, Sr. GM (Operations), TPDDL, 33kV Hudson Lane S/stn Bldg, Kingsway
Camp, Delhi-110009
25. Sh. P. Devanand, (HOG-SO), TPDDL, Adjacent to 66/11kV Pitampura-3 Grid Building,
Near PP Jewellers, Pitampura, Delhi-34
26. EO to CMD, DTL
27. DGM(SCADA), SLDC Delhi
28. Sh. Darshan Singh, Manager (SO), SLDC Delhi
Copy for favour of kind information to :1. Secretary, DERC, Viniyamak Bhawan, C-Block, Shivalik, New Delhi-110017
2. Chairman and Managing Director, DTL
3. Chairperson, New Delhi Municipal Council, Palika Kendra, Sansad Marg, New Delhi
4. Member Secretary, NRPC, Katwaria Sarai, New Delhi-110016
5. General Manager (NRLDC), POSOCO, Katwaria Sarai, New Delhi-110016
6. Managing Director, Indraprastha Power Generation Company Ltd (IPGCL) / Pragati
Power Corporation Ltd (PPCL), Himadri, Rajghat Power House, New Delhi-110002
7. Director (Operations), DTL
8. Director (Finance) DTL
9. Director (HR), DTL
10. CEO, BSES Rajdhani Power Ltd, BSES Bhawan, Nehru Place, New Delhi-110019
11. CEO, BSES Yamuna Power Ltd, Shakti Kiran Building, Karkardooma, New Delhi-92
12. CEO, Power System Operation Corporation (POSOCO), B-9, Qutub Institutional Area,
Katwaria Sarai, New Delhi-110016
13. CEO, Tata Power Delhi Distribution Ltd, 33kV Grid S/Stn, Hudson Lane, Kingsway Camp,
Delhi-110009
14. Chief Engineer(Utilities),CWE, MES, Kotwali Road, Near Gopi Nath Bazar, Delhi Cantt
New Delhi-110010
15. Addl. Secretary (Power), Govt. of NCT of Delhi, Delhi Secretariat, New Delhi
DELHI TRANSCO LTD.
(Regd. Office : Shakti Sadan, Kotla Road, New Delhi 110002)
[Office of Dy. General Manager (SO)]
SLDC Building, Minto Road, New Delhi – 110 002
Phone No.23221149, 23221175, Fax 23221012, 59
Subject :
Summary Record of discussions held in the Meeting held on 05.06.2013 at
SLDC to discuss about Transmission & Distribution constraints.
A meeting was convened in SLDC to discuss about Transmission and Distribution constraints
likely to exist during summer 2013 and to evolve strategy to overcome the constraints. This
meeting was a follow up of the meeting held on 05.02.2013 at SLDC.
The list of participants is enclosed as Annexure-A.
The following is the gist of the discussions and decisions.
1. The interstate transmission capacity of Delhi for summer 2013 is as under :Interstate Transmission Capacity
Sr.
No
.
1
Name of
the Inter
connection
point
Mandola
2
Bawana
3
Bamnauli
Transmission Element
400/220kV 315MVA Tx-I
400/220kV 315MVA Tx-II
400/220kV 315MVA Tx-III
400/220kV 315MVA Tx-IV
315MVA
315MVA
315MVA
315MVA
280
280
280
280
Available
Transfer
Capacity
in MW
250
250
250
250
Total
400/220kV 315MVA Tx-I
400/220kV 315MVA Tx-II
400/220kV 315MVA Tx-III
400/220kV 315MVA Tx-IV
400/220kV 315MVA Tx-V
400/220kV 315MVA Tx-VI
1260
315MVA
315MVA
315MVA
315MVA
315MVA
315MVA
1120
280
280
280
280
280
280
1000
250
250
250
250
250
250
Total
400/220kV 315MVA Tx-I
400/220kV 315MVA Tx-II
400/220kV 315MVA Tx-III
400/220kV 315MVA Tx-IV
1890MVA
315MVA
315MVA
315MVA
315MVA
1680
280
280
280
280
1500
250
250
250
250
1260
1120
1000
400/220kV 315MVA Tx-I
400/220kV 315MVA Tx-II
400/220kV 500MVA Tx-I
400/220kV 500MVA Tx-II
315MVA
315MVA
500MVA
500MVA
280
280
400
400
140
140
140
140
Total
400/220kV 315MVA Tx-I
400/220kV 315MVA Tx-II
Total
1630
315MVA
315MVA
630MVA
1360
280
280
560
560
100
100
200
Total
4
5
Maharani
Bagh
Mundka
Capacity in
MVA /
MW
Transfer
Capacity
in MW
Remarks
The outage of D/C
line b/w Maharani
Bagh and Trauma
Center caused
reduction in ATC.
Sr.
No.
6
Name of
the Inter
connection
point
Harsh
Vihar
7
BTPS
8
Narela
9
Rohtak
Road
(BBMB)
10
Patparganj
11
Gazipur
Transmission Element
Capacity in
MVA / MW
Transfer
Capacity
in MW
400/220kV 315MVA Tx-I
400/220kV 315MVA Tx-II
315MVA
315MVA
280
280
Available
Transfer
Capacity
in MW
0
0
Total
220kV Ballabhgarh Ckt-I
220kV Ballabhgarh Ckt-II
220kV Alwar Ckt.
220kV Noida Ckt. (Sec 20)
Total
220kV Panipat Ckt-I
220kV Panipat Ckt-II
220kV Panipat Ckt-III
Total
66kV Gurgaon Ckt-I
66kV Gurgaon Ckt-II
33kV Gurgaon Ckt.
33kV Bahadurgarh Ckt.
Total
220kV Sahibabad ckt.
220k Noida Sec-62 Ckt.
220k Noida Sec-20 Ckt.
Total Capacity
630MVA
132MW
132MW
132MW
132MW
528MW
100MW
100MW
100MW
300MW
20MW
20MW
20MW
20MW
80MW
132MW
132MW
132MW
560
132
132
-132
-132
0
100
100
100
300
-20
-20
-20
-20
-80
132
132
132
0
100
100
-100
-132
-32
75
75
75
225
-10
-10
-10
-10
-40
0
0
132
6456
4745
Remarks
Due to delay in
commissioning of
400kV Dadri Harsh Vihar D/C
line by PGCIL
Generation
Generation Capacity being injected at 220kV or below level
Station
Capacity in MW
BTPS
705
RPH
130
GT
270
Pragati
330
Rithala
75
TOWMCL
16
Total Capacity
1526
Total Demand handling capacity
Capacity
in MW
7668
Ex-bus
Capacity
600
100
150
300
50
12
1212
5997
Note : If any reduction in generation / outage of interstate element, the transmission capacity
gets reduced.
It was informed that on 31.05.2013, both the circuits between 400kV Maharani Bagh – 220kV
AIIMS which was feeding power upto Naraina via Ridge Valley got damaged in HDD drilling
exercise of Delhi Jal Board. This caused reduction of 340MW transmission capacity
reduction. This reduction is resulting the over-loading of 400/220kV 315MVA transformers at
Bamnauli and 220kV BTPS – Ballabhgarh circuits.
SLDC representative intimated that BRPL, BYPL and TPDDL has been requesting to back
down generation strictly on merit order as huge underdrawal is occurring under high frequency
conditions due to adequate power arrangements made by the Discoms. It was further argued
that the anticipated demand of Summer 2013 has not happened so far. The overall power
supply position anticipated and occurred during April 2013 to June 2013 is as under :
All figures in MW
1st Fortnight
MONTH
2nd fortnight
APRIL 2013
00-03
03-09
09-12
12-18
1824
0003
0309
0912
1218
1824
DEMAND ANTICIPATED
3350
3100
3900
4200
3800
3200
3100
4000
4400
4200
ACTUAL DEMAND MET
2800
2700
3500
3700
3400
3400
3125
3900
4200
4000
DEMAND ANTICIPATED
4200
3650
4500
5000
4600
4750
4450
5000
5500
5200
ACTUAL DEMAND MET
4200
3600
3800
4429
4438
4840
4450
4670
5350
5050
DEMAND ANTICIPATED
5000
4500
5000
5700
5200
5200
4750
5400
5900
5400
ACTUAL DEMAND MET
4800
4405
4801
5092
5064
4822
4464
4762
5375
4897
MAY 2013
JUNE 2013
The Distribution licensees further were of the view that the power was also not being sold on
day ahead basis through Power Exchanges due to lack of demand in NEW grid and
transmission corridor problems with NEW grid and Southern Regional Grid. They were of the
view that under such conditions the only option appears to close down costly generations such
as BTPS Units 1,2 & 3 of 95MW capacity each, GT station of IPGCL, Bawana CCGT, Aravali
etc.
SLDC representative elaborated the following problem in closing and backing down load
center based generation.
Station
name
Installed
capacity
in MW
Variable Charges in
PS/Unit
2012- Apr
May 13
13
13
(avg)
Reason for non backing down
BTPS
705
359
During peak hours irrespective of frequency and
underdrawal position of Delhi full generation is
required to ensure security of power system of
Delhi as in the event of backing down the major
link of BTPS with the grid i.e 220kV BTPSBallabhgarh Double Circuit lines get over loaded
along with over loading of 400/220kV 315MVA
ICTs at 400kV S/Stn of PGCIL at Samypur.
During off peak hours the backing down is carried
out to the extent of technically possible limit. It
was also explained that the availability and
scheduled power from BTPS during April 2013 to
June 2013 establishes the extensive backing down
carried out in this station.
361
339
Month
April 13
May 13
Jun 13
Availability in
In MUs
In % of
capacity
430
93.5
463
98
456
99.35
Scheduled in
In MUs
In % of
capacity
376
82
398
84
366
80
Station
name
GT
Installed
capacity
in MW
270
Variable Charges in PS/Unit
2012-13 Apr 13
May 13
(avg)
366
393
374
RPH
135
297
305
305
PPCL
330
276
247
304
Bawana
CCGT
685
306
359
283
Aravali
Power
1500
345
356
358
Reason for non backing down
At least two modules (4 GTs and 2 STGs) are
required to be maintained through out the day to
contain the loading on 220kV link system
mainly, 220kV Wazirabad – Geeta Colony –
Patparganj D/C apart from limiting the load on 4
nos. of 400/220kV 315MVA ICTs at Mandola to
1000MW for secure operation of the Grid.
During the off peak hours, sum load relief
occurs in the link, but to avoid frequent closing
and start up of generation, two modules of GTs
amounting the generation of 150MW ex-bus
generation is required to be ensured. However,
even during peak hours, this quantum of
generation is insufficient to contain the loading
of mainly 220kV Wazirabad – Geeta Colony –
Patparganj D/C apart loading on 400/220kV
315MVA ICTs at Mandola.
The entire summer season, both units of RPH
should be ensured to be available to contain
loading of associated transmission system as per
the reasons mentioned above.
The reasons are same as that mentioned in case
of RPH and GT.
To obviate stringent Take and Pay clause of
Gas, the generation is being scheduled to extent
of technical bare minimum level.
At present, Delhi is having 11.71% of the
1500MW, capacity of the Station. Balance
power out of 46.2% capacity allocation has been
reallocated to needy states upto 30th September
2013 (at present). Delhi SLDC is not scheduling
any power from Aravali Jhajjar units. However,
NRLDC schedules power occasionally to Delhi
to meet the technical minimum requirement to
ensure operation of the units. The recent (87 th)
OCC of NRPC held on 17.05.2013 has also
decided following in this regard:11. Technical minimum scheduling
to IGSTPP.
Representative of Aravali Power
Company Ltd. stated that their
IGSTPP (A 1500 MW Thermal power
station) is an ISGS with major
beneficiaries
being
Haryana
(46.2%), Delhi (11.79%) and U.P.
(13.34%) from NR grid. Other
major beneficiaries are Andhra
(15.7%) and Kerala (6.0%). He
added that on 05.05.2013, IGSTPP
Units # 2 & 3 were on bar (2 x
500 MW). The schedule was only
approx. 385 MW to 338 MW. He
said
that
schedule
was
approimately 320 MW short of
Technical Minimum schedule for 2
units of 500 MW. Haryana and
Station
name
Installed
capacity
in MW
Variable Charges in PS/Unit
2012-13 Apr 13
May 13
(avg)
Reason for non backing down
Delhi had given ‘nil’ schedule.
It was not possible to reduce AG
to
the
level
of
schedule,
keeping
in
view
the
stable
operation of the units, while
the frequency was above 50.0 Hz.
NRLDC could not protect our
technical
minimum
level
of
generation nor were we allowed
to close down one machine, which
caused
heavy
loss
to
our
company. He requested that :(1)
NRLDC
should
ensure
technical minimum schedule to
them on a sustained basis.
(2)
In
case
of
very
low
schedule, it should be ensured
that
request
for
reserve
shutdown is issued immediately
and
the
period
of
Reserve
shutdown should be for a minimum
period of 72 hours, bar to bar.
IGSTPP is a base-load station &
such frequent starts and stops
are detrimental for the plant
machinery life.
(3) In case of any revision of
schedule the ramp-up and rampdown
rate
should
be
within
desired 1% ramp rate (CERC Grid
Code clause 5.2 h). The ramp
quantity should be 37.5 MW per
500MW unit for the first block
and thereafter 75 MW per 500MW
unit in subsequent blocks.
(4) It needs to be ensured that
Revision
of
schedule
to
be
exercised from the 6th time
block or in case of tripping
from the 4th time block as per
IEGC.
Representative of NRLDC stated
that
Haryana
has
been
requisitioning
power
varying
from zero to their full share
and has been writing letters
intimating that they will not
pay for the power booked to them
without requisition. Further, in
the event of allowing units to
go in reserve shut down, Haryana
takes the stands that they will
not pay charges for DC. He added
that under, such situations, it
is
not
possible
to
give
technical minimum schedule to
IGSTPP.
Station
name
Installed
capacity
in MW
Variable Charges in PS/Unit
2012-13 Apr 13
May 13
(avg)
Reason for non backing down
Representative of NRLDC desired
that OCC should decide as to
when a machine be shut down and
after how much time the machine
can
be
re-started.
Representative of Aravali Power
Company
Ltd.
stated
that
decision taken to stop a machine
should not take too long and
reserve shutdown should be for a
minimum period of 72 hours, bar
to bar.
Representative of HVPNL stated
that their requisition was based
on the requisition by their
distribution companies. SE(O),
NRPC
suggested
that
either
Haryana
may
consider
surrendering its share or else
divert it till such time they
don’t need it. Member Secretary,
NRPC was of the view that NRLDC
was well within its powers to
schedule technical minimum. GM,
NRLDC stated that they will
endeavour to schedule technical
minimum
by
persuading
the
beneficiaries. However, in the
event
of
technical
minimum
scheduling
to
IGSTPP
without
adequate requisition, power will
be booked to all beneficiaries.
Representative of HVPNL stated
that
technical
minimum
be
maintained at 65%.
After discussions OCC decided
that in respect of Technical
minimum scheduling of generating
stations, SLDCs will requisition
power so that technical minimum
gets scheduled. In the event of
less
requisition,
NRLDC
will
schedule
to
the
technical
minimum level and power will be
booked to all beneficiaries in
proportion to their share.
Inspite of the decision of OCC of NRPC,
the power scheduled to Delhi from Aravali
Jhajjar is much less than the stipulated 70%
Statio
n
name
Instal
led
capac
ity in
MW
Variable Charges in
PS/Unit
2012-13 Apr 13
May
(avg)
13
Reason for non backing down
technical minimum level scheduling which is evident
from the following table :Mont
h
Apr
13
May
13
Jun
13
Availability
In
%age
In
MUs
for Delhi
in MUs
In
%age
104.4
92
60.29
1
61.05
3
792
142
673
79.35
18.59
5
11.79
659
77.75
11.79
Scheduling
by
NRLDC / as per
Discom’s
requirement
In MUs
In
%age
of
allocati
on
11.92
8.3
12.125
15.35
9.942
12.79
Apart from above, Delhi SLDC schedules power from various sources depending upon system
conditions. It was also explained that the technical problems in closing down of units at Load
Centers mainly Aravali, Dadri (Thermal)-I & II etc. at the time of high peak demand season.
The closing down not only creates the transfer capacity reduction in Inter Regional transfer of
power in the Grid but also lowers the voltage at load centers.
It was further explained that in case of closing down of machines at Bawana CCGT, the
generator of the Steam Turbine is having some technical problem due to which IR value of the
generator goes down. As such, whenever Bawana Station is asked to restart, the machine after
a gap of 3-4 days, the generator of Steam Turbine is required to be dried out which normally
takes about 12-18 hours during which the Gas Turbine has to operate in Open Cycle mode.
After detailed discussions, it was decided to ensure maximum availability of generation in
Delhi which is being injected at 220kV level and below during peak summer season. The
backing down should be carried out in these units by SLDC to the extent possible considering
the security of the Grid. As far as Bawana CCGT is concerned, the technical minimum level
operation of the combined cycle mode generation to be maintained looking into the time being
taken by the unit to be back on bars if they are closed down as mentioned above, however, in
case of load crash these units should be closed down despite the fact of Take or Pay clause for
maximum guaranteed off take by generator for the station.
For other station like Dadri (Thermal) Stage-I & II etc, the scheduling should be done on
technical minimum level depending upon real time operation. For Aravali Power, SLDC
should requisition power only as per request by Discoms notwithstanding the fact that NRLDC
schedules power to beneficiaries to ensure minimum technical limits for operation of the units
as per the decision of OCC of NRPC.
2
Transmission Constraints and suggestions to remove the same
Sr.
No.
Details
transmission
constraints
of
Suggestions drawn out
as per discussions held
on 05.02.13 and 8th GCC
meeting held on 08.03.13
Target fixed
Discussion and decision in
the meeting (present status)
1
Outage of 220/66kV
100MVA Tx-II at
Okhla since 14.28hrs.
on 16.10.2012 due to
damage of the Tx.
Augmentation
of
220/33kV 50MVA
Tx to 220/33kV
100MVA
Tx
at
Okhla - out since
19.36hrs.
on
05.06.2010
The Tx should be revived
before onset of summer
30.04.2013
Tx.
Commissioned
10.05.2013 at 12.32hrs.
The Tx should be
augmented before onset
of summer
31.05.2013
3
Outage of 220/33kV
100MVA Tx-III at IP
220kV since 06.25hrs
on 24.07.12 due to
damage of the Tx.
The Tx should be revived
before onset of summer
30.04.2013
4
Outage of 220/33kV
100MVA Tx-II at
Electric Lane – out
since 20.09.2012
Even though the present
load is only 50MW. To
have redundancy, the Tx.
should
be
energized
during the summer season
31.07.2013
5
220kV Naraina –
Ridge Valley Ckt.out since 15.45hrs. on
17.09.2012
Delay
in
commissioning
of
220kV AIIMs –
Ridge Valley D/C
line
To be energized before
summer
31.03.2013
Representative of Project
Department of DTL informed
that the civil foundation of
transformer needs to be
modified. The Tx for which
foundation was designed for
CGL make Tx has been
diverted to RPH to replace the
damaged 100MVA Tx. The
new Tx received in the month
of June 2013 at Okhla.
However, design of Tx is
different from earlier CGL
make Tx. The foundation for
the new transformer is
required to be modified.
Representative
of
O&M
Department of DTL informed
that transformer is expected to
be
commissioned
by
15.07.2013. The reason of
delay is attributed due to delay
in execution of work by the
contractor (UP)
The representative of Project
Department of DTL informed
that the work of revival of
transformer is expected to be
completed by 15.08.2013. The
inspection work of the
transformer is under progress.
Cable
energized
on
12.04.2013 at 17.11hrs.
For ensuring maximum
evacuation from Maharani
Bagh S/Stn and to give
relief to 400/220kV ICTs
at Bamnauli, the link
should be established to
meet the summer load
demand.
31.05.2013
To meet Summer 2013 Demand
2
6
on
One of the cables (Ckt-II)
energized on 15.04.13 at
18.38hrs. It is informed that
the other circuit (ckt-I) has
also been rectified but the
same has been damaged again
in the excavation work by
DMRC. Now it has been
decided to reroute the cable
due to the upcoming station at
Bhikaji Cama Place.
Sr.
No.
Details of
transmissio
n
constraints
7
To
ensure
maximum
evacuation
from
Mundka
400kV
S/Stn.
8
Stability of
supply
of
West Delhi /
North Delhi
areas
9
The
transmission
constraints
in
North
Delhi areas
10
The
transmission
constraints
in West and
North Delhi
areas
Suggestions
drawn out as
per
discussions
held
on
05.02.13 and
8th
GCC
meeting held
on 08.03.13
220kV
Najafgarh –
Kanjhawala
Ckt. to be
LILO
at
Mundka
LILO
of
220kV
Bawana
–
Najafgarh
Ckt.
at
Kanjhawala
Commissioni
ng of 220kV
Wazirpur
S/Stn.
Commissioni
ng of 220kV
Peera Garhi
S/tn.
Target fixed
Tower
cast
completion
by
30.06.2013 and 15
days shut-down
for LILO after
that
Discussion and decision in the meeting resent
status
It is explained that 5.5 Kms of the circuit are
converted into under ground cable in the Loop in
portion and 5.5 Kms for Loop out portion.
Towers are required to be erected in 35
locations. The route approval was received from
DDA in January 2010. For erection of towers,
interruptions are occurred due to agitation by
farmers. The foundation casting is done under
police protection. Towers are also erected in 19
locations. The clearance for erection for 5 nos.
of tower is yet to be obtained from DDA. Court
cases are also hampering the work. As per the
present conditions, the work might be completed
by 31st Dec. 2013.
Route length of the line for Loop In is 3.2Kms for and for Loop Out,
length is 3.3Kms. Towers and foundation casting have been erected
at 30 locations. Stringing work has been completed for loop out
portion. Due to non availability of stringing material, the work is held
up and tower foundation at three locations are also held up. The work
is expected to be completed by 31.12.2013.
31.05.13
It was explained that due to reasons beyond the
control of DTL, the sub-station could not be
commissioned before 15.08.2013.
TPDDL representatives vehemently protested
the delay as their intra discom constraints in
certain pockets only be rectified after the
commissioning of sub-station. It was also
suggested that in case the sub-station is ready,
arrangement should be made to feed the substation from 220kV Shalimar Bagh so that 33kV
feeders can be fed from the 220kV Wazipur
S/Stn.
Project Department expressed their inability to
commit anything. It was also suggested that a
joint team of DTL and TPDDL may visit site at
Wazirpur and Shalimar Bagh to draw out any
possible way to feed the sub-station.
Though it was The Project Department informed that the
expected to be project would now expected to be completed by
commissioned by 31.10.13.
30.06.13, due to
delay in getting
RBI approval for
opening Project
Account
for
Rupees payment
to the successful
Chinese Bidder,
the project is
expected to be
commissioned
only by 31.12.013
Sr.
No.
Details
of
transmission
constraints
11
The
over
loading
of
Mandola ICTs
and
220kV
Wazirabad –
Geeta Colony
– Patparganj –
IP D/C line.
12
Over loading
at
Mandola
and
transmission
line between
Mandola and
IP,
the
commissioning
of the S/Stn to
be expedited
before summer
2013
Overloading of
220/66kV
100MVA Txs
at
Mehrauli
during
peak
hours
Commissioning
of 400kV Harsh
Vihar S/Stn.
160MVA
Tx
available at site
to be energized
before summer
2013.
31.03.2013.
Overloading of
220/66kV
100MVA Txs
at Wazirabad
160MVA
Tx
available at site
to be energized
before summer
2013.
31.05.2013.
13
14
Suggestions
drawn out as
per discussions
held on 05.02.13
and 8th GCC
meeting held on
08.03.13
Commissioning
of
220kV
Maharani Bagh –
Gazipur D/C line
Target fixed
Discussion and decision in
the meeting resent status
UP Irrigation Deptt has not
given the clearance sofar to
erect five towers on the route
in their territory. In the 84th
OCC meeting of NRPC held
on
19.02.13,
UPPCL
requested 100MW power from
Gazipur during the shut-down
period of one of the 315MVA
ICTs at Greater Noida S/Stn.
DTL agreed to provide the
power to Noida after the
completion of Gazipur –
Maharani Bagh D/C line. The
87th meeting held 17.05.2013,
the matter was again raised by
DTL’s representatives in the
meeting wherein UPPCL
authorities assured their help
in getting the clearance of
erecting towers provided DTL
giving 150MW power to UP.
Due
to
delay
in
commissioning of 400kV
Dadri – Harsh Vihar D/C line
by PGCIL, the target could not
be fixed.
Route length is 9Kms and
number of location is 42.
Foundation cast for 34
numbers of towers has been
done and at 32 locations,
towers have also been erected.
NOC for 5 numbers of towers
has not been given by the UP
Irrigation Department. The
matter is being pursued at
Govt. and DTL level. It is
hopeful that the permission
would be granted by UP
Irrigation Department. The
work is expected to be
completed by 31.12.2013.
It was intimated that as per
information available from
Powergrid sources, the line
would be readied by the end of
August 2013. The S/Stn is
already ready, BYPL was
advised to ensure that the
proposed O/G 66kV feeders
should be readied by that.
BYPL representative agreed to
complete the circuits by the
stipulated time.
The Tx has not yet been
energized. G.M. Project-I
informed that the material like
availability of C&R panel LV
side CT etc. are being
arranged. The only bottleneck
is the tree cutting permission
from Forest Department for
which Civil Department is
lisoning. It is expected to
commission the transformer
by 15.08.2013
In tendering process, the
parties quoted abnormally
high prices than estimated
which is under scrutiny and
process.
Sr.
No.
Details of
constraints
15
Stability
Gazipur
16
Overloading of 220/66kV
100MVA
Txs
at
Pappankalan-II
17
220kV Maharani Bagh –
Masjid Moth Ckt-I is out
since 22.50hrs. on 26.04.13
due to excavation process of
Delhi Metro
18
Revival of Long outage capacitors
Sl.
No.
transmission
of
supply
Name of S/stn
at
Suggestions drawn out as
per discussions held on
05.02.13 and 8th GCC
meeting held on 08.03.13
160MVA Tx available at
Gazipur to be energized as
quick as possible
160MVA Tx available at
site to be energized before
summer 2013.
Target
fixed
To meet the ongoing
summer peak, the cable
must be energized as quick
as possible.
--
Capacity
down in
MVAR
Date of
outage
10
5.04
09.07.08
20.05.12
1
2
220kV Patparganj
220kV Gazipur
3
4
5
6
220kV Mehrauli
220kV Narela
220kV Shalimarbagh
220kV Pappankalan-I
20
20
10
20
10.09.09
26.05.12
05.01.10
08.10.10
7
220kV Naraina
10
29.06.12
8
220kV IP
Total
20
115.04
04.03.13
Sr.
No.
Details of
constraints
transmission
Discussion and decision
in the meeting resent
status
30.06.13
31.05.13.
The transformer oil is
being arranged as insisted
by manufacturer M/s BBL
as the same has been used
somewhere by DTL and is
expected by 20.07.2013.
Circuit
has
been
energized on 06.06.2013
at 20.25hs.
Reason
Target
Damage of
Reactor and NCT
Damage of cells
Non availability
of bay
Damage of cells
Damage of cells
Damage of cells
Damage of cells
& Reactor
Due to theft of
metal strip
The orders of the
capacitors cell are
being made within a
week time. The work
of revival is expected
to be completed by the
end of July 2013.
Suggestions drawn out
Target fixed
Present status
Summer 2014 and onwards
1
Overloading of 220kV
Ckts. from Mandola to
BTPS namely 220kV
Mandola – Wazirabad (4
Ckts), 220kV Wazirabad
– Geeta Colony (Two
Ckts), 220kV Geeta
Colony – Patparganj (2
Ckts), 220kV Patparganj
– IP (2Ckts), 220kV IP –
Pragati Ckt (2 Ckts),
220kV Pragati – Sarita
Vihar (2 Ckts.) after
removal
of
present
LILO, 220kV Sarita
Vihar Ckt (2 Ckts)
Capacity enhancement of
transmission lines should be
carried out in phased manner
In 1st phase
220kV Wazirabad – Geeta
colony D/C line, 220kV
Geeta colony – Patparganj
D/C line
220kV Patparganj – IP D/C
line,
Second Phase
220kV Mandola–Wazira Bad
Ckt-I, II, III & IV
220kV Pragati – Sarita Vihar
Ckt-I & II
220kV Sarita Vihar – BTPS
Ckt-I & II
Third phase
Enhancement of the capacity
of switchgears at Wazirabad,
Geeta Colony, Patparganj, IP
and Sarita Vihar S/Stns.
Planning Deptt
to prepare the
scheme so that
the
augmentation
can be done
before summer
2014
To
be
augmented by
summer 2015
Subsequently
It was informed that
since the suppliers of
HTLS conductors are
limited, the project
could be completed
before next summer
only if the same is
awarded to single
party as pilot project.
Director (Ops) advised
if it was the case, the
same should be put up
with due justification
for taking the decision
at appropriate level so
that the enhanced
transmission system
capacity is available to
meet summer 2014
demand.
Sr.
No.
Details
of
transmission
constraints
Suggestions drawn out
in
the
meeting
05.02.2013 and 8th GCC
meeting
Two transformers to be
augmented to 160MVA
Txs along with 66kV bus
bars at Pappankalan-I.
Lines capacity of 220kV
Bamnauli - PappankalanI
should
also
be
augmented to handle the
enhanced transformation
capacity.
Target fixed
Present status
2
Overloading of
Transformers at
Pappankalan-I
and 220kV Line
between
Bamnauli and
Pappankalan-I
Planning
Department to
prepare
the
scheme so that
that the system
to be in place
before summer
2014
Over-loading of
400/220kV
315MVA
transformers at
Mandola.
31st Standing Committee
Meeting
of
Power
System Planning held on
02.01.2013 at CEA, has
approved
the
augmentation of all four
315MVA
Txs
to
500MVA capacity.
Over-loading of
400/220kV
315MVA ICTs
at Ballabhgarh
31st Standing Committee
meeting
of
Power
System Planning held on
02.01.2013 at CEA has
approved
the
augmentation of all three
315MVA
Txs
to
500MVA
To
be
implemented
by PGCIL. It
is understood
that two Txs
would
be
augmented
before summer
2014
and
others before
summer 2015.
To
be
implemented
by PGCIL. It
is understood
that all Txs
would
be
augmented
before summer
2015.
With regard to implementation of
capacity
enhancement
of
transmission line this should also be
put in the ambit as a pilot scheme.
With regard to enhancement of
transformation capability Plg. Deptt.
intimated that the scheme would be
placed within one month. Planning
Department representative informed
that as per the Planning Criteria
notified by CEA, the maximum
capacity fixed for a sub-station is
500MVA. If the two transformers
got enhanced to 160MVA capacity,
the total capacity of the station would
exceed the limit of 500MVA.
There was a general consensus that if
there was any technical impediment
in clearing the proposal for
enhancement of the existing two
220/66kV 100MVA Txs to two
220/66kV 160MVA Txs, it could be
thought of to enhance the capacity to
150MVA Txs instead of 160MVA
Txs to keep the total capacity of the
sub-station at 500MVA.
Director (Ops) advised to put the
scheme
of
enhancement
of
transmission line capability also as
pilot project along with the case of
Wazirabad-Geeta
ColonyPatparganj link as these schemes
are to be implemented before onset
of summer 2014 due to the
urgency.
No change in status
3
4
No change in status
Sr.
No.
Details of transmission
constraints
5
Alternate source to RPH
6
Reliability of supply of
East Delhi areas
7
Overloading of Najafgrh
and Pappankalan-I Grids
Suggestions
drawn
out in the meeting
05.02.2013 and 8th
GCC meeting
The establishment of
link between 220kV
Kashmiri Gate to RPH
to be established so
that
parallel
link
between 220kV Harsh
Vihar – Wazirabad –
Kashmiri Gate – RPH
could be established
for ensuring reliability
of power supply of
Central and East Delhi
areas.
DTL should plan and
implement the substation
being
established in East
Delhi for which land
has recently been
taken over by DTL as
quick as possible and
alternate link should
be established namely
220kV Harsh Vihar –
Wazirabad – Anand
Vihar (New S/Stn) Patparganj
To ensure maximum
evacuation
from
Mundka and to reduce
loading
on
transformers at 220kV
Najafgarh, BRPL be
allowed to connect the
Paschim Vihar feeder
from Nangloi to utilize
maximum capacity of
Nangloi
cables
emanating
from
Mundka. TPDDL is of
the view that the T-off
portion of Mangolpuri
- Nangloi Ckt-I & II is
required
to
be
disconnected
at
Nangloi Grid so that
TPDDL could directly
feed Mangol Puri Grid
from Mundka.
The
disconnection
issue
was to be resolved in
the Planning Steering
Committee meeting to
be held on 11.03.2013.
Target fixed
Present status
Planning Department intimated that
the scheme for GIS has already been
prepared and is under finance
scrutiny.
Planning Department representative
intimated that the scheme should be
realigned with the recommendations
of CEA who are about to submit the
report
of
comprehensive
transmission planning of Delhi upto
2021-22.
TPDDL & BRPL representative
intimated that the mutual agreement
has already been entered into the
resolve the issue. It was further
clarified that the proposal could be
implemented once the reliability of
supply to Nangloi and Nangloi
Water Works from Mundka is
achieved. To ensure the reliability
of the supply from Mundka to
Nangloi, the cross bonding of cables
are being planned at joints which is
expected to be completed within 4
months.
Sr.
No.
8
Details
of
transmission
constraints
Overloading of
66/11kV
at
Najafgarh,
Pappankalan-I,
and Wazirabad
and 33/11kV
Txs
at
Shalimar Bagh
220kV
SubStations
Suggestions drawn out in
the meeting 05.02.2013 and
8th GCC meeting
Due to problem of getting
space near 220kV S/Stns.
Distribution
Licensees
requested DTL to enhance
the capacities of the 66/11kV
and 33/11kV transformers at
critically loaded sub-stations
namely
Najafgarh,
Pappankalan-I,
Shalimar
Bagh and Wazirabad before
summer
2014.
GCC
approved the request and
advised Planning Department
of DTL to get the DERC
approval for enhancement of
transformation capacity of
66/11kV and 33/11kV so that
the transformers are placed
before summer 2014.
Target fixed
Present status
Planning Department representative intimated
that as per the DTL Board resolution adopted
on 01.10.2002 (8th meeting of Board of
Directors) DTL is not authorized to invest on
assets of 66/11kV, 33/11kV assets. As such
the decision of enhancement of capacity at
66/11kV and 33/11kV should be revisited.
The representatives of Discoms univocally
emphasized the need of revision of the DTL
board’s decision. As with the passage of time
from year 2002 by now the power demand of
the areas fed from these assets have also
increased in the same pace of total demand of
Delhi which was to the tune of less than
3000MW during 2002 has been increased to
6000MW at present. As already mentioned in
the proceedings of 8th GCC held on 08.03.13
DTL should go ahead with enhancement of
the transformation capacity of 66/33/11kV
level wherever it is technically feasible. The
decision of the 8th GCC meeting is extracted
here under :
Distribution Licensees were of the view that the
existing 66/11kV or 33/11kV 16/20MVA
transformers should be augmented to meet the
increasing demand of the areas fed from these
transformers as there is a legal hurdle to
transfer these assets to Distribution Licensees
being inherited by DTL at the time of
unbundling. Due to severe space constraints
for establishment of new substation in nearby
areas is also becoming tough to shift the load
from 220kV sub-stations since 220kV substations have enough space to accommodate
new transformers / enhanced capacity
transformer, DTL should moot the proposal to
enhance the transformation capacities of
66/11kV and 33/11kV transformers which would
be economically viable then establishment of
new sub-stations in nearby areas. It was also
emphasized that by doing so, reliability of
supply would also be enhanced.
These
enhancements should immediately be carried
out at critically loaded substation such as
220kV Najafgarh, 220kV Pappakalan-I, 220kV
Shalimar Bagh, 220kV Wazirabad substations.
Distribution Licensees requested DTL to
carryout these enhancement before summer
2014. Planning Department of DTL intimated
that DERC has not agreed to augment the
transformation capacities of 66/11kV and
33/11kV at 220kV sub-stations on the plea that
DTL can only maintain but not to enhance the
transformation capacities as these are
distribution assets.
Sr.
No.
Details
of
transmission
constraints
Suggestions drawn
out in the meeting
05.02.2013 and 8th
GCC meeting
Target fixed
Present status
After deliberation, GCC advised Planning
Department of DTL to moot the proposal
again in the light of discussions of this
meeting and draw out plans for
enhancement of the transformers in the
above mentioned critically loaded substations before summer 2014.
3)
9
In adequate
transmission
capacity
at
Masjid Moth
10
Enhancement
of
transformation
capacity from
existing
2X100MVA
(220/33kV)
Txs. At Lodhi
Road
Planning Deptt. to
prepare scheme so
that
additional
220/33kV Tx is in
place at Masjid
Moth
before
summer 2014.
At present both the
transformers
are
running
at
full
capacity
and
occasional
load
shedding also taking
place due to over
loading.
Director (Ops) advised Plg. Deptt. to go
ahead with the decision of 8th GCC
meeting and put up the case for
revision of Board decision taken in the
meeting held on 01.10.02 if that
decision is the hindrance for
augmentation
of
transformation
capacity at 66//11 & 33/11kV level
according to the requisition.
The plan has already been prepared and
the 3rd transformer would be in place by
summer 2014.
Due to space constraint the 3rd Tx is
possible only after the conversion of
conventional to GIS which is expected to
be in placed by Summer 2014.
Frequent outage of 66kV Mundka – Nangloi Ckt. and 66kV Mundka – Nangloi
Water Works Ckt. and 66kV Mundka – Mangolpuri Ckt.
Due to frequent fault of 66kV Mundka – Nangloi Ckt, 66kV Mundka – Nangloi Water
works ckt and 66kV Mundka – Mangolpuri cktthe evacuation capacity of 400kV
Mundka S/Stn gets reduced. It further aggravates already overloaded 220/66kV
100MVA Txs at Najafgarh. In various meetings, BRPL assured that the cables would
be rectified and would continuously be made available. However, there is not
improvement of healthiness of the cables. The frequent outage of the cable is causing
load shedding in Najafgarh S/Stn due to over-loading of its Txs. The details of outage
of the circuit emanating from 400kV Mundka S/Stn were presented as under :-
66kV Mundka - Nangloi Ckt (Energized on 01.08.2011 at 16:35Hrs.)
Sl.
No.
Tripping
date
Restorati
on date
Restorati
on time
Relay indication
Remarks
01.08.11
Trippi
ng
Time
16:36
1
11.08.11
19:02
Cable faulty
10
2
29.08.11
04:00
29.08.11
13:59
Dist. Prot. B-phase, 51A,
86A&B along with 220/66kV
160MVA Tx. which tripped
on 86A&B, supervision faulty,
CPR signal, visual audio
alarm, signal A&B
86, 67N
1
3
4
27.12.11
13.02.12
18:18
05:57
09.01.12
17.02.12
16:06
18:17
Transient
fault
Cable faulty
Cable faulty
13
4
5
6
12.03.12
10.04.12
0:33
08:13
31.03.12
14.05.12
13:48
14:58
Cable faulty
Cable faulty
19
35
7
8
9
10
11
12
13
14
15
16
17
26.05.12
10.06.12
04.07.12
27.07.12
06.08.12
29.08.12
31.08.12
12.09.12
04.10.12
18.10.12
09.11.12
17.51
06.11
11.57
15.11
19.10
12.47
20.37
15.32
13.06
15.10
17.33
29.05.12
21.06.12
19.07.12
30.07.12
27.08.12
31.08.12
05.09.12
18.09.12
08.10.12
09.11.12
16.11.12
15.17
19.05
13.39
16.07
19.28
19.52
17.04
13.08
15.33
17.14
15.12
3
11
15
3
21
2
5
6
4
22
7
18
31.12.12
16.17
06.01.13
08.17
Cable faulty
Cable faulty
Cable faulty
Cable faulty
Cable faulty
Cable faulty
Cable faulty
Cable faulty
Cable faulty
Cable faulty
Cable
Faulty
Cable faulty
19
20
21
22
23
24
09.01.13
19.02.13
15.03.13
05.05.13
13.05.13
04.06.13
10.16
12.40
20.19
06.40
17.31
06.20
16.02.13
07.03.13
29.03.13
13.05.13
24.05.13
04.06.13
15.12
14.15
20.08
14.40
16.08
06.51
38
19
14
8
11
0
25
26
05.06.13
29.06.13
11.07.13
09.51
12.48
17.13
27.06.13
02.07.13
15.07.13
14.46
09.18
17.57
Cable faulty
Cable faulty
Cable faulty
Cable faulty
Cable faulty
Transient
fault
Cable faulty
Cable faulty
Cable faulty
19.07.13
24.07.13
16.54
16.35
24.07.13
Still out
14.30
Cable faulty
Cable faulty
5
Total days
303 days
out of
697days of
service upto
30.06.2013
27
28
General trip, O/C, 86
86, Zone-2&3, dist. Prot. 67N,
DT, O/C
E/F
Dist. Prot. Zone-2&3, Direct
O/C, general trip
General trip 86 Master Relay
General trip 86 Master Relay
General trip 86 Master Relay
General trip 86 Master Relay
General trip 86 Master Relay
General trip 86 Master Relay
General trip 86 Master Relay
General trip 86 Master Relay
General trip 86 Master Relay
General trip 86 Master Relay
Dist. Prot E/F
O/C, General Trip, Master
Relay
General trip 86 Master Relay
General trip 86 Master Relay
General trip 86 Master Relay
Dist Prot Zone-II
General trip 86 Master Relay
Directional O/C
Dist Prot Zone-1, RYB
Directional O/C
Dist Prot. Zone-II, RYB, Bus
Bar Protection
Dist Prot. Y’ Phase, Zone-I
Dist Prot `Y’ Phase Zone-I,
Directional O/C
Nos of days
outage
6
22
4
4
66kV Mundka - Nangloi W/W Ckt (Energized on 02.08.2011 at 17:40Hrs.)
Sl.
Tripping
Tripping Restoration Restoratio Relay indication
No. date
Time
date
n time
1
03.08.11
17:56
25.08.11
16:07
220/66kV 160MVA
Tx. tripped on visual
audio alarm, ERA
trip, ERB trip,
86A&B, supervision,
86, 4WS2 link. Bphase of 66kV
Nangloi W/W found
faulty
2
03.11.11
12:00
09.11.11
20:13
Dist. Prot. zone-I,
67NX along with
220/66kV 160MVA
Tx. tripped on
86A&B. cable of
66kV feeder found
faulty
3
14.11.11
8:17
19.11.11
15:41
Tripping of 315MVA
ICT and 160MVA Tx
Tripping of 315MVA
4
11.12.11
21:30
20.12.11
10:03
5
6
7
22.12.11
26.12.11
26.01.12
01:19
14:51
04:15
26.12.11
08.01.12
13.02.12
14:50
18:23
18:32
8
28.03.12
03:09
15.04.12
18:13
9
10
24.04.12
10.06.12
08:18
06.09
28.04.12
10.06.12
12:53
08.31
11
18.06.12
17.03
23.06.12
19.50
12
02.08.12
04.08
07.08.12
18.25
13
28.08.12
09.30
31.08.12
13.16
14
15
29.09.12
24.02.13
08.08
19.22
04.10.12
26.02.13
17.47
15.08
16
17
06.06.13
01.07.13
09.07.13
09.07.13
21.07.13
16.54
15.20
18.31
22.32
09.48
09.06.13
03.07.13
09.07.13
13.07.13
Still out
03.23
22.56
20.16
20.16
18
19
20
ICT and 160MVA Tx at
19:47hrs. and
normalized at 21:39hrs.
PTW issued to BSES at
23:18hrs. on the 66kV
W/W feeder
86, General trip
O/C, general trip, 86
O/C prot. trip, B-phase
faulty
86, Dist. Prot. Zone-3,
O/C, R-phase faulty
O/C, 86
General Trip 86 Master
Relay
General Trip 86 Master
Relay
General Trip 86 Master
Relay
General Trip 86 Master
Relay
Dist Prot Zone-I
General Trip 86 Master
Relay
Directional O/C
Directional O/C
Directional O/C
Directional O/C
Directional O/C
Remarks
Cable faulty
Total days
of outage
22
Cable faulty
6
Tx tripping
5
Cable faulty
9
Cable faulty
Cable faulty
Cable faulty
4
13
18
Cable faulty
18
Cable faulty
Transient fault
4
1
Cable faulty
5
Cable faulty
5
Cable faulty
3
Cable faulty
Cable faulty
6
4
Cable faulty
Cable faulty
3
2
4
Cable faulty
Cable faulty
Total
126 days
out of 698
days of
service
upto
30.06.13
BRPL informed that it has laid two 66 kV circuits from Mundka to Nangloi and Nangloi Water
Works for power evacuation from 400/220 kV Mundka.
BRPL further updated that the faults have been analyzed and it was learnt that the circuits are
comprising of single core cables of 1000 sq.mm. cross-section and as such the sheath voltage
at the end of cables becomes very high. Earthing of sheath at one end, results a heavy sheath
current causing faults in the cables.
It was suggested that the problem of rising sheath voltage can be cured by cross bonding of
cable sheaths. The workability of proposal and plan of action was worked out. As the cable are
already laid and commissioned and tracing of cables digging on road side cross bonding
jointing etc is a difficult task.
However, the forward path has been decided and BRPL has gone ahead with execution of
cross-bonding joints in its commissioned 66 kV cable circuits. Work is under award and the
work is expected to complete with in next 4 months as far as the circuit in question are
concerned.
Further to this, BRPL informed that it has decided to go for all future 66 kV cable circuits
(above 1.5 kM route length) with cross bonding joints.
It was also mentioned that the same problem is encountered by TPDDL in 66kV Mangolpuri
Ckt emanating from 400kV Mundka. This feeder also goes under frequent break-down as
detailed hereunder :
Details of outage of 66kV Mangolpuri feeder from 400kV Mundka (date of energization 18.02.12
at 13.04Hrs.)
From
Date
25.02.12
22.03.12
12.05.12
18.05.12
17.06.12
19.07.12
13.08.12
04.09.12
07.12.12
11.12.12
13.12.12
16.01.13
05.02.13
13.03.13
25.03.13
Time of
outage
16.44
9.22
18.02
23.21
07.08
10.39
15.59
14.10
13.17
11.39
19.56
22.53
03.10
06.45
12.39
To Date
02.06.13
06.06.13
08.06.13
6.29
16.46
6.32
02.06.13
07.06.13
Till date
21.03.12
24.03.12
13.05.12
29.05.13
17.06.12
19.07.12
13.08.12
12.09.12
07.12.12
11.12.12
19.12.12
22.01.13
05.02.13
13.03.13
30.03.13
Time of
restoration
14.57
15.18
14.13
22.42
15.41
14.14
19.48
20.20
22.31
13.48
15.56
11.29
04.41
14.10
12.43
8.55
14.49
Relay indication
Remarks
R-phase, Zone-I, Dist. Prot.
R-phase, Zone-I, Dist. Prot.
Over voltage
R-phase, Zone-I, Dist. Prot.
R-phase, Zone-I, Dist. Prot.
O/C, Dist. Prot. 3-phase, Z-1
O/C, E/F, Bus bar Prot.
R-phase, Zone-I, Dist. Prot.
R-phase, Zone-I, Dist. Prot.
LBB at Mundka
R-phase, Zone-I, Dist. Prot.
R&Y-phase, Zone-I, Dist. Prot.
Over voltage
Bus bar Prot at Mundka
O/C, Y-phase, Zone-I, Dist.
Prot.
Dist. Prot. B-phase
O/C, E/F
Dist. Prot. R-phase, Z-1, E/F
Total
Cable faulty
Cable faulty
Over voltage
Cable faulty
Cable faulty
Cable faulty
Cable faulty
Over voltage
Cable faulty
Cable Faulty
No. of days
of outage
25
2
11
8
6
6
5
1
22
84 days out
491 day of
service upto
30.06.2013
The cross bonding effected is detailed as under :
Cross-bonding of Cables
When three single phase cables are used in power transmission, currents are induced in
the sheaths and lead to sheath circulating currents and power loss. These may be
substantially reduced, and the current rating of the cable increased by cross bonding of
the cables (Figure 5.4). Cross bonding of cables are done except for very short lengths
of cable.
The continuity of each cable sheath is broken at regular intervals; the cables between
two adjacent discontinuities being a minor section. 3 minor sections make up a major
section, where the sheaths are solidly bonded together and to earth. A residual sheath
voltage exists, and the desired balance, giving negligible sheath voltage between the
solid grounded positions is achieved by transposing the cables at each cross bonded
section. To prevent excessive voltage build up at the cross bonded points, especially
during faults, these points are earthed through non-linear resistors which limit voltage
build up. The cable is also transposed.
All utilities were requested to ensure permanent remedial measures to ensure working
of 66kV cables emanating from 400kV Mundka Sub-Station so that maximum power
can be evacuated from Mundka to relieve congested transmission system of 400kV
Bamnauli, Mandola and 220kV Najafgarh and Pappankalan-I Sub-stations.
4)
Non utilization of Bays allotted to Distribution Utilities from Newly created Sub
Stations of DTL:In the meeting held on 05.02.2013 and 8th GCC meeting held on 08.03.2013, it was
decided to review the non utilization of bays allocated to different utilities for more
than one year from the date of allocation. It was also decided that in case the allotted
bays are not utilized, the same may be allocated to the needy utilities after due
consideration by Planning Steering Committee. On review, it is seen that the following
bays are not utilized from different 400kV and 220kV S/Stns:S
N.
Name of
400/220k
V S.Stns.
1
2
3
Details of non utilization of bays
Voltage
level
Name of bay
Name
of
the utility
to whom
the bay is
allocated
Original
allocation
date
Present status
220kV
Trauma
Center
33kV
1. Sanjay Camp,
2. Kidwai NgarII,
3 Jor Bagh
Total = 3 Bays
NDMC
19.11.09
1. As per the information provided
by NDMC, the nomenclature has
been changed to Race Course.
Work is held up due to monsoon.
However, expected by Dec. 13.
2.Energized on 30.11.12 at
12.47Hrs.
3. ½ cable laid, expected by
sept.13. However, Sub-station
would be ready by Dec. 2013.
Work is held up due to monsoon.
220kV
Electric
Lane
33kV
1.
Vidyut
Bhawan
2
Connaught
Place
3. Hanuman road
4. Mandi House
5 Janpath Lane
6 Church Road
7 Delhi High
Court
Total = 7 Bays
NDMC
19.11.09
220kV
DSIDC
Bawana
66kV
1 Bawana-I
2 Bawana-I
3 Bawana-7
4 Bawana-7
Total = 4 Bays
TPDDL
19.11.09
1.50% cable laid. Work is held up
due to permission of digging.
2. Energized on 24.05.13 at
19.30hrs.
3. The work for laying of cable has
been awarded. The cable laying
activities would be started after
monsoon. Expected by December
2013.
4. Energized on 01.10.12 at
17.00Hrs.
5. Land allocation for Janpath Substation is still awaited. However, it
has been proposed by NDMC to
use this Bay for new proposed
33kV Sub-station at Parliament
Annexure for which land has been
allocated.
6. Bay allocated to DMRC by
NDMC for their upcoming project
in Phase-3
7. The land allocation fro the S/stn
at Delhi High Court premises has
not been obtained so far. However,
NDMC is planning to terminate the
cable at some other S/stn which is
under planning statg.
For 1&2 the cable work is under
progress. Expected by Sept.13
For 3&4 it is a deposit work of
DSIIDC. The scheme has been
approved by DERC and expected
by Feb. 2014. Further, DSIDC has
yet to deposit the amount for which
demand note has already been
raised. GM(PLG), DTL suggested
to spare one bay earmarked for
DSIIDC for the connection of
upcoming MSW plant being
established in the area. TPDDL
requested DTL to construct
additional bay for establishing the
connectivity of MSW Plant. Dir.
(Ops) was of the opinion that since
the load on Bawana-7 is not
expected before
2015 the
connectivity of MSW plant be
done in the existing bay. However
DTL should ensure that the bay
would be ready when TPDDL’s
cable and S/Stn are ready.
S
N.
Name of
400/220k
V S.Stns.
4
5
Details of non utilization of bays
Volt
age
level
Name of bay
Name of
the utility
to whom
the bay is
allocated
Original
allocation
date
Present status
220kV
Rohini-II
66kV
1 RG-30-I
2 RG-30-II
3 RG-6-I
4 RG-6-II
Total = 4 Bays
TPDDL
31.05.12
400kV
Mundka
66kV
1. 66kV Mundka ckt-I
2. 66kV Mundka ckt-II
3.66kV Bakarwala cktI
4.66kV Bakarwala cktII
5. 66kV Pashim Vihar
BRPL
19.11.09
Scheme has been submitted to
DERC for approval. Both the
circuits would be energized after the
establishment of Rohini-30 Grid
S/Stn.
For RG-VI Ckt-I & II, it is
explained that there is no link from
Rohini-II S/Stn. RG-VI Ckt-I & II
is through Rohini-II(20kV) – RG-28
Ckt-I & II which is already under
charged position
1 &2. Work for construction of
66kV Mundka S/Stn. Has been
awarded in June 2013 and S/Stn. Is
expected by March 2014. The total
length of Cable is 400 mtrs.
TPDDL
1.66kV Mangol Puri-II
2.66kV Kirari Sultan
Puri Ckt.-I
3.66kV Kirari Sultan
Puri Ckt.-II
TPDDL
3&4. The scheme for the
establishment of the Bakkarwala
S/Stn. was approved by DERC in
2007. However, the scheme was not
implemented due to inadequate load
requirement. Now, DERC has again
been approched for approval as price
has been increased significantly.
5. The cable length is more than 18
Kms. To avoid the sheath voltage
inducement problem has been
encounter on 66kV Nangloi,
Nangloi
Water
Works
and
Mangolpuri Feeders, it was decided
to take out the Paschim Vihar feeder
from the upcoming 220kV Bodella
S/Stn. The planning steering
Committee for re-allocation of
Paschim Vihar Bay allotted to
BRPL from Mundka to upcoming
Dichau Kalan S/Stn.
19.11.09
1.For Mangolpuri Ckt-II, though the
scheme has been prepared but has
not been submitted to DERC due to
pending resolution of T-Off to
Nangloi on Mangolpuri ckt.
For 2&3 TPDDL explained that the
S/stn is envisaged in 2015-16 and by
the time the Ckt would be readied.It
was further explained that the matter
has been taken up with Delhi Govt
for allocation of land for
establishment of 66kV Grid S/Stn.
It was explained that due to the non utilization of bays by NDMC at Trauma Center, the
existing system are getting oftenly congested resulting into load shedding in other
utilities’ areas. The drawal by NDMC from IP Station oftenly causing load shedding in
BYPL areas particularly due to the break-down of one 100MVA Tx at IP. The loading
position of NDMC from IP Station in one particular day was shown as under :Name of the feeder
33kV Bay-2 (IP – Nirman Bhawan)
33kV Bay-4 (IP – Electric Lane)
33kV Bay-6 (IP – Tilak Marg)
33kV Bay-10 (IP – Electric Lane)
33kV Bay-16 (IP – Nirman Bhawan)
33kV Bay-28 (IP – Connaught Place)
33kV Bay-38 (IP - Connaught Place)
33kV Bay-42 (IP - Connaught Place)
Load in Amps at 11.30hrs.
15.05.2013 (33kV side)
195
115
220
No Load
170
75
180
135
on
From the above, it is seen that if NDMC shift the entire load from IP, to the under
loaded s/stations, the load shedding at IP can be avoided.
It was further informed that the matter was taken up with NDMC by SLDC. They have
intimated that being VVIP load, Bay-2 & 16 (IP – Nirman Bhawan), and 33kV Bay-6
(IP – Tilak Marg) can not be shifted. However, they assured that Bay-4 & 10 (IPElectric Lane) feeders would be shifted to 220kV HC Mathur Lane. The load of
Connaught Place feeder already shifted to newly energized 33kV Connaught Place bay
from 220kV HC Mathur Lane (Electric Lane) S/Stn.
It was proposed by SLDC that all 33kV feeders of NDMC emanating from IP
Station would be kept opened at IP till the 3rd Transformer is energized.
However, in case of emergency, the feeders would be energized from IP by SLDC.
This measure is suggested to tide over the crisis due to the outage of one 100MVA
Tx. at IP. NDMC requested not to disconnect the feeders from IP to ensure
stability of power supply to NDMC areas. However they assured to shift
maximum load from IP. For coordination purposes Chief Engineer (E), NDMC
requested SLDC to allow for operating their control room from SLDC. It was
indicated by SLDC that it is absolutely impossible after the implementation of
ULDC Ph-2 for which equipments have already been started coming in and would
have to be established in the existing space of SLDC Control room due to non
coming of new SLDC building before the implementation of ULDC Ph-2. The
ULDC Scheme-II is scheduled to be implemented by September 2013 by the time,
NDMC should shift the control room from SLDC (Minto Road) to their own
control room.
Director (Ops) advised NDMC representative to urgently take necessary steps to
shift their control room by September 2013 to their newly established area control
center.
With regard to non utilization of bays by the utilities, it was observed that many bays
are lying unutilized from even years together causing the under utilization of sparingly
available assets. BRPL representative suggested that due to the tough stand of NDMC
not to allow the allocation of unutilized bays to other needy utilities from AIIMS
(220kV) and HC Mathur Lane 220kV S/Stn. The transmission cost of sub-station
should be booked on the basis of bays allocated from these station in stead of present
way of pooling the transmission charges among the Distribution Licensees. NDMC
was of the view that these sub-stations are especially created to cater the increasing
demand of strategic important NDMC areas. General Manager (Commercial), DTL
mentioned that the methodology of apportionment of sub-station wise Transmission
Charges based on bay allocation would complicate the entire transmission charges
sharing methodology and is not time with the present Transmission Tariff Regulation of
DERC. It was also pointed out that in number of newly commissioned Grid S/Stns, the
bays allocated to other utilities are also lying unutilized. He further opined that instead
of floating ideas of sharing of transmission charges of newly commissioned grid substations according to the bay allocation, utilities should try to use the bays allocated
optimally for proper utilization of the national assets created for the benefit of people.
5
Distribution Constraints and remedial measures suggested
In the meeting held on 05.02.2013, the following constraints / suggestions to remove
the constraints have been discussed:-
BYPL
Sr.
No.
1
2
3
4
5
6
Over-loading
of
elements pertains to
BYPL (Constraints)
33/11kV
15MVA
Pr.Tr. at Shanker
Road
33/11kV 16MVA Pr
Txs. At Prashad
Nagar
3 nos 33/11kV Txs
at Guru Angad Nagar
(One 25MVA and
Two 20MVA)
2
Nos
66/11kV
25MVA Tx-II at
Shastri
Park
(Central)
One 20MVA Txs
and One 25MVA
Txs at East of Loni
Road
33kV Park Street –
Motia Khan Ckt-I &
II
Remedial measure under taken
Status as on date
Augmentation of Tx to 25MVA is
proposed. Load rationalization has
already been carried out to even out the
loading on other two Txs.
Augmentation of Tx to 25MVA is
proposed.
Work in progress. Likely to
be
commissioned
on
04.07.2013.
No addition is possible at the S/stn. To
transfer the load additional 16MVA Tx
is being installed at Geeta Colony and
Kanti Nagar S/stns before summer
2013.
Augmentation of 11kV I/C to full
capacity is proposed before summer
2013.
Additional
16MVa
Tx
energized on 09.04.13 at
33kV Geeta Cly grid. The
work at Kanti Nagar grid is
under progress
Energized on 08.05.13
Augmentation planned before summer
2013
Work under progress and
likely to be completed by 15th
July 2013
All the 3 infeeds of Motia khan S/stn is
proposed to be reoriented to have
independent feeding by putting isolators
or loop cables before summer 2013.
Completed on 19.03.2013
Commissioned on 05.06.13
BRPL
Sr.
No.
1
2
Over-loading
of
elements pertains to
BRPL (Constraints)
33kV Malviya Nagar –
Andheria Bagh Ckt.
Txs at C-Dot
Remedial measure under taken
Status as on date
Proposal for two 33kV infeeds from
Vasantkunj B Blk S/stn to Andheria
bagh has been devised and
submitted to DERC for approval.
Additional 3rd 25MVA Tx. is under
execution and expected by 31.03.13.
Scheme is under approval
from DERC
Additional 3rd 25MVA Tx.
is under execution and
expected by 31.07.13.
Sr.
No.
Remedial measure under taken
Status as on date
3
Over-loading
of
elements pertains to
BRPL (Constraints)
Txs at G-V Matiala
Additional 4th 25MVA Tx. is under
execution and expected by 31.03.13.
4
Txs at NDSE
5
33kV Pankha Road –
Mayapuri Ckt.
6
66kV
Najafgarh
Bodella-II Ckt-I & II
7
Txs at Vishal
8
66kV
Najafgarh
Matiala Ckt-I & II
9
10
Txs at Kilokari
Txs at Bindapur
11
12
13
Txs at Hari Nagar
Txs at Nehru Place
50MVA Txs at Ridge
Valley
14
Txs at East of Kailash
15
33kV
Okhla
Tuglakabad Ckt.
Load swapping of Txs. being
prepared as no space for additional
Txs.
Scheme for additional 33kV feed
from Pankha Rd. was devised and
submitted to DERC for approval.
Hasthal
S/stn
is
under
commissioning and expected by
31.03.13. Part load of Bodella-II
would be shared by Hasthal. Once
the 220kV Bodella-2 S/stn is
commissioned the problem would
be completely eliminated.
New S/stn at GGSH is expected by
the end of March 2013. Part load of
Vishal would be shared by the S/stn
Additional Ckt from PPK-II is
under execution and expected
before 31.03.13
Load swapping of Txs. being done.
Scheme for additional Tx. is under
consideration by the Steering
Committee.
Load swapping of Txs. being done.
Load swapping of Txs. being done.
NDMC has to shift its load from
Ridge
Valley
to
newly
commissioned S/stn Trauma Center
(AIIMS) and Electric Lane. BRPL
requested for additional 220/33kV
100MVA Tx. at Ridge Valley
Load swapping of Txs. being
prepared.
At present Tuglakabad is fed from
Okhla 220kV and 66kV Malviya
Nagar S/stns. On steady state
conditions there is no constraints.
However, in case of outage of 33kV
Okhla-Tuglakabad Ckt the other
Ckt from Malviya Nagar get
overloaded causing load shedding.
The loading of 33kV Malviya
Nagar-Tuglakabad is restricted due
to being overhead portions of the
Ckt is of Wolf. The laying of
additional cables from Malviya
Nagar is being established. As a
temporary measure the possibility
of utilizing 33kV Masjid Moth Ckt
from 220kV Okhla by laying the
cable from the closing of the Ckt at
Guru Rabidas Marg to Tuglakabad
with approximate length of 22.5KM.
Additional 4th 25MVA Tx. is
under
execution
and
expected by 30.09.13.
Load swapping done
–
–
–
Scheme is under approval
from DERC
Hastsal grid commissioned
on 08-06-2013.
Land for 220 kV Bodella -2
has been handed over to
DTL on 11-06-2013
GGSH
is
commissioned.
already
Additional Ckt from PPK-II
is under execution and
expected before 30.09.13
Load swapping done
Scheme for additional Tx. is
under consideration by the
Steering Committee.
Load swapping done
Load swapping done
BRPL
requested
for
additional
220/33kV
100MVA Tx. at Ridge
Valley
Load swapping done
As a temporary measure the
possibility of utilizing 33kV
Masjid Moth Ckt from
220kV Okhla by laying the
cable from the closing of the
Ckt at Guru Rabidas Marg to
Tuglakabad
with
approximate length of 22.5KM.
Sr.
No.
6
Over-loading
of
elements pertains to
BRPL (Constraints)
Txs at Mayapuri
17
20MVA Txs at Bodella-I
18
19
Txs at Jamia
20MVA Txs
Pappankalan
20
21
20MVA Txs at Sagarpur
Txs at Bodella-II
22
23
Txs at Masjid Moth
Txs at Sarai Julaina
24
Txs at Shivalik
25
33kV Nangloi – Udyog
Nagar Ckt.
26
27
Txs at Nangloi
33kV Nangloi – Paschim
Puri Ckt.
28
29
Txs at R.K. Puram-I
Txs at Udyog Nagar
at
G-2
Remedial measure under taken
Status as on date
At present there are 3Txs of
20MVA each. Two Txs are loaded
to 85% and 3rd one is 65%. Since
DERC is not allowing the
augmentation of 20MVA Tx to
25MVA Txs. the swapping of load
being accomplished for meeting
summer 2013 load. Another 33kV
A43 S/stn at Mayapuri is under
commissioning (expected before
summer 2014) which would share
the part load of this Txs.
Scheme for 4th 25MVA Tx has been
taken up for execution.
Another 33kV A43 S/stn at
Mayapuri is to be taken up
(expected before summer
2014) which would share the
part load of this Txs.
Load swapping of Txs. being done.
Scheme for additional 25MVA Tx
has been put up to the Steering
Committee.
Load swapping of Txs. being done.
Load shall be shared by the
upcoming Hasthal S/stn
Load swapping of Txs. being done.
Augmentation of Txs. with 25MVa
Txs (2nos.) has been approved by
DERC.
Additional 3rd Tx is expected by
31.03.13
After the commissioning of 220kV
Peeragarhi S/stn the additional Ckts
are envisaged from it namely Udyog
Nagar & A4 Paschim Vihar.
Load swapping of Txs. being done.
After the commissioning of 220kV
Peera garhi S/stn the problem will
be vanished.
Load swapping of Txs. being done
One Tx. has been augmented from
16MVA to 25MVA
Scheme for 4th 25MVA Tx
has been taken up for
execution.
Load swapping done
Scheme
for
additional
25MVA Tx has been put up
to the Steering Committee.
Load swapping done
Hastsal
grid
is
commissioned on 08-062013
Load swapping done
Augmentation of Txs. with
25MVa Txs (2nos.) has been
approved by DERC.
Additional 3rd Tx is expected
by 31.12.13
After the commissioning of
220kV Peeragarhi S/stn the
additional
Ckts
are
envisaged from it namely
Udyog Nagar & A4 Paschim
Vihar.
Load swapping done
After the commissioning of
220kV Peera garhi S/stn the
problem will be vanished.
Load swapping done
One Tx. has been augmented
from 16MVA to 25MVA
TPDDL
Sr.
No.
1
2
Over-loading
of
elements
pertains
to
TPDDL
(Constraints)
33kV
Jahangirpuri –
Azad purcktI&II
33kV
AIR
Kham Pur Jahangirpuri
Ckt
Remedial measure under taken
Status as on date
Over-Load on this circuit would be reduced
after commissioning of 220kV Wazirpur
Grid.One power transformer of Ashok Vihar,
Tri nagar and 2 transformers of Azadpur would
run on 220kV Wazirpur grid. 1
RG-5 to Air KhampurCkt –WIP-Line expected
by 31.05.13
1. 33
KV
GIS
Grid
commissioned.
2. 220 KV DTL Grid is under
construction.
The Job is 90% Completed.
There is resistance from
farmers to provide ROW at
other locations.
Sr.
No.
3
4
5
Over-loading
of
elements
pertains
to
TPDDL(Cons
traints)
33/11kV Tx. at
SGT Nagar
33kV Naraina
–
Inder
PuriCkts
Txs
at
Bawana-6
Txs.
at
Bawana-7
33kV Jahangir
PuriSGT
Nagar Ckt
Remedial measure under taken
Status as on date
DERC Approval awaited for augmentation to 25
MVA
In normal condition there will be No Over-loading
of these Circuits. However another A-21 grid is
expected by 30.06.13. Part load of Inderpuri and
Panadavnagar would be shifted which would ease
the over loading.
DERC have not approved
the proposal..
Expected by 30.06.13.
In case of outage of any one ckt, one PTR of
Inderpuri Grid can be run through PusaCkt in
addition to both PTRs of Pusa Grid via ParkstreetShastri Park Ckt-1&2. Pandav Nagar Grid can then
be run through DMS Circuit.
Bawana-1 Grid- WIP-Expected by 30.06.13
Expected by 30.09.13.
3rd PTR at Bawana-7 – DERC Approval received
on 23- Jan-13. Expected by 30.06.13
In normal running there will be No Over-loading
of this Circuit. During outage of Shalimar BaghSGTN Ckt there will be over-loading. DERC
Approval received on 01.02.13 foraugmentation of
33kV Jahangirpuri- SGT Nagar Ckt from Wolf
(405Amp) to Goat (634Amp) conductor.
3 power transformers of WZP-2 and one of WZP-1
will be run on 220kV Wazirpur S/stn once it is
commissioned. Till then over loading during
summer months can not be ruled out.
Expected by 30.09.13.
In normal condition there is no over loading.
However to reduce over loading DLF Kirti Nagar
– Saraswati Garden Twin cable Ckt is expected by
end of March 13 which would reduce the loading.
2 Nos Cable already laid
from DLF Kirti Nagar to
Saraswati Garden and one
cable has been energized.
33kV
Shahzadawala
bagh-Rohtak
Rd Ckt
33kV
Shah
ZadabaghRampuraCkt
Txs at Ashok
Vihar
SubziMandi to SZ Bagh – conversion to twin cable
– WIP-Expected date of completion is 30.06.13
13
33kV Ashok
ViharWazirpurCkt-I
14
33kV Rohtak
road
–
RampuraCkt
15
Tx. at DSIDC
Narela-I
The loading would be eased after commissioning
of 220kV Wazirpur grid and linking of 33kV
Wazirpur-WIP Ckt. 2 power transformers of
Ashok Vihar will run on 220kV Wazirpur
Mitigation- 220kV Wazirpur Grid – WIP- once
220kV Wazirpur S/stn is commissioned. One
power transformer of Rampura will run on 220kV
Wazirpur grid.
Load to be shifted to DSIDC-2 Grid through 11kV
feeders- WIP- 5 MVA load to be shifted to
DSIDC2 Grid and 3 MVA load to be shifted to A7 NRL Grid.
The Job 95% completed.
Only 100 M portion is left
due
to
railway
permissions.
Depending
on
commissioning
of
Wazirpur 220 KV grid.
Expected to be completed
by 30.09.13 due to non
availability of shutdown
in summer.
Depending on
commissioning of
wazirpur 220 KV grid.
6
7
8
9
10
11
12
33kV
SMB
Khosla
U/G
Ckt
from
220kV
Shalimarbagh
33kV Rewari
Line Ckt from
220kV
Naraina
Wazirpur GIS Grid – WIP (This circuit will be
delinked and connected to Wazirpur GIS Grid
once it is commissioned).
PTR Augmentation- DERC Approved-Expected
by 30.06.13
The Permission for ROW
applied.
Ordering
in
progress.
Depending on 220 KV
wazirpur grid of DTL .
Depending on
commissioning of
wazirpur 220 KV grid.
The 3 Nos 11 KV Panel
has been installed at
DSIIDC-II Grid. expected
to commissioned by
30.06.13.
Sr.
No.
16
6
Over-loading
of
elements
pertains
to
TPDDL(Cons
traints)
33kV
Rani
BaghCkt-I&II
from 220kV
Shalimarbagh
Remedial measure under taken
Status as on date
The commissioning of Rani Bagh CC Grid would
ease the loading. DERC Approval received on 16Jan-13 (Infeed from upcoming 220kV Peeragarhi
Grid)
Rani Bagh CC Grid: The
Civil work is in progress .
Capacitor installation programme
The updated position of capacitor installation is as under :-
NDMC
S.
No.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Name of ESS
B.D. Marg
Bapu Dham
Shahjahan Road
Mandi House
State Guest
House
Hanuman Road
National
Archives
Race Course
School Lane
Scindia House
S.
No.
Name of ESS
1
Keventor dairy
2
3
4
5
6
7
No. of APFC
Bank to be
installed
1
1
2
2
1
Capacity of
each Capacitor
Bank
5.04 MVAR
5.04 MVAR
5.04 MVAR
5.04 MVAR
5.04 MVAR
1
1
5.04 MVAR
5.04 MVAR
1
1
1
12 Nos.
5.04 MVAR
5.04 MVAR
5.04 MVAR
60.48 MVAR
Present
status
Status as on
date
Work
awarded.
Work to be
completed by
December 2013.
No. of
APFC
Bank to be
installed
2
Capacity of
each
Capacitor
Bank
5.04 MVAR
Present
status
Status as on date
-Do-
Sanjay camp
Raisina Road
Trauma Centre,
AIIMS
2
2
2
5.04 MVAR
5.04 MVAR
5.04 MVAR
Netaji Nagar
Raja Bazar
Ali Ganj Jor
Bagh
3
2
2
5.04 MVAR
5.04 MVAR
5.04 MVAR
-Do-DoCapacitor
Bank
installed.
-Do-DoS/S Building
yet to be
constructed.
Energized during
May 2013
-do-doTripping circuit to
be installed.
15 Nos.
Total
75.6 MVAR
136.08MVA
R
BYPL
Sr.
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
Additional Capacitor Bank installation programme for 2013-14 in BYPL
Location of Grid SubMVAR
Status
DERC
Status as on
Station
Approval
date
Status
33kV Jama Masjid
5.4
Installed
Approved.
Energized
on 12.06.12
33kV Fountain
5.4
Yet to be
Approved.
installed
33kV Faiz Road
5.4
33kV G.T. Road Shahdra
5.4
33kV Geeta Colony
5.4
33kV Karawal Nagar-II
5.4
66kV Gonda
5.4
66kV Bhagirathi
5.4
33kV DMS
5.4
Under
approval
33kV Anand Parvat
5.4
33kV Jama Masjid
5.4
33kV Minto road
5.4
33kV B.G Road
5.4
33kV G.B. Pant
5.4
66kV Shasri Park Central
5.4
33kV Town Hall
5.4
33kV Shankar Road
5.4
33kV Dwarka Puri
5.4
66kV Mayur Vihar phase-II
5.4
33kV Preet Vihar
5.4
66kV Sonia Vihar
7.5
Installed
26.03.13
Total
115.5
BRPL
Capacitors to be commissioned in FY 2012-13
S.
N
Year
Locatio
n
1
201213
Hastsal
Capacitor
planned
in MVAR
21.6
GGSH
10.8
Total
32.4
2
Status
Present status
Installed
Hastsal Grid commissioned on 08-06-2013.
Energisation of capacitor banks expected by Jul.13.
Commissioned 13.02.2013
Installed
Capacitors planned to be commissioned in FY2013-14
S.
No.
1
Year
Location
Capacitor planned Present status
in MVAR
7.2
Commissioning
expected in FY 2013-14
7.2
2013-14
C-DOT grid substation
2
2013-14
G-5 Matiyala
3
2013-14
Shivalik grid substation
5.4
4
2013-14
Okhla Phase -1 grid substation
7.2
5
2013-14
G-2 PappanKalan grid substation
7.2
6
2013-14
G-3 Bindapur grid substation
7.2
7
2013-14
Bijwasan grid substation
7.2
8
2013-14
Jasola Media Centre grid substation
21.6
9
2013-14
DJB Najafgarh grid substation
21.6
10
2013-14
G-4 Dwarka grid substation
21.6
11
2013-14
Mundka grid substation
21.6
Total in MVAR
135
Capacitors planned to be commissioned in FY 2013-14 at LT level
S.
No.
Year
1
201314
Location
Capacitor planned
in MVAR
256.4
Status
Remarks
1058 nos.
Planned
Commissioning expected
Distribution
in FY 2013-14
transformers
Note - The LT APFC's shall be located with the DT's identified.
Programme for reorientation of capacitors
Name of the sub-station
Exhibition-I
Capacity in MVAR
decommissioned
10.08
D.C. Saket
Vasant Kunj D block
10.08
20.16
Malviya Nagar
Total out
20.16
50.40
Present Status
Neither space nor breaker is available. Planning to
shift the capacitor to some other substation.
Connected and energized on 15.06.2013
Dismantled, new bay to be constructed, Scheme
under preparation
Commissioning expected Jan-2014
TPDDL
Sr.
No.
1
Location of Grid SubStation
RG-28
2
3
4
5
6
7
8
9
Bawana
Rani Bagh CC
RG-23
SMB FC
A-21
Bawana-I
Model Town
Bawana Phase-II-I
MVAR
10.8
Status
Present status
Installed but not
charged
4.8
9.6
4.8
4.8
4.8
10.8
10.8
10.8
72.00
Work is in progress
To be installed in 201314
Capacitor reorientation programme
Name of the
sub-station
66kV
Rohini-IV
Capacity
in
MVAR
20
Utility
Remarks
Latest position
TPDDL
Would be installed at
66kV Poothkhurd S/Stn.
Electrical Inspector NOC done.,
Charging is planned on 21 June
13
Summarizing the above, utility-wise program for installation of additional capacitors is
as under :
Utility
Installed
so far
Remarks
TPDDL
Planning
for
installation
of
additional capacity
in MVAR
2013-14
72.2
10.08
BRPL
167.4
10.8
BYPL
108
5.4
NDMC
126
30.24
MES
--
--
10.08MVAR installed at RG-28 S/Stn but not yet
energized.
Additional 256.4MVAr capacity is planned to be
added at LT level in 2013-14. Further 10.8MVAR
added at GGSH S/stn on 13.02.2013
Approval for 32.4MVAr has already been
accorded by DERC. 5.4MVAR added at Jama
Masjid S/stn on 12.06.12
5.04MVAr capacitor is also planned for Ali Ganj,
Jorbagh for which building is yet to be
constructed. Further 30.24MVAR capacity added
at Keventry Diary, Sanjay Camp and Raisina Rd
S/stn. 10.08MVAR each during May 2013.
The installed capacity 21.1MVAr is sufficient to
meet the load of MES. However for voltage
regulation they have planned additional capacity at
LT level for 2013-14.
Total
473.6
56.52
Summarizing the above, capacitor position of Delhi as on date is as under :
Utility
BYPL
TPDDL
NDMC
DTL
BRPL
RPH
MES
Total
Requirement as
per NRPC Study
Installed capacity
in MVAR (HT)
863.8
657.4
209.8
753.5
1178.78
20
20.1
3703.38
4594 as on
31.03.2013
Installed in capacity
in MVAR (LT)
102
119
24
0
242
0
0
487
Total
965.8
776.4
233.8
753.5
1420.78
20
20.1
4190.38
General Manager (Planning), DTL informed that the work of reactive power
compensation planning has been awarded to CPRI. He requested to provide the
information sought by them in connection with the study as early as possible so that the
study can be completed as per the stipulated time.
All utilities agreed to provide the same.
It was further decided to review the progress by the end of August 2013.
Meeting ended with thanks to Chair.
Annexure-A
List of the participants attended the meeting on 05.06.2013 at SLDC
Sl. Name
No.
Designation
Utility
Phone no.
E_mail ID
1
Sh. Asim Haldar
DTL
9999533
2
3
4
Sh. V. K. Gupta
Sh. Roop Kumar
Sh V.K. Garg
DTL
DTL
DTL
9999533625
9999533629
9999533634
vkg.dtl@gmail.com
roop.kumar@dtl.gov.in
vgarg8645@gmail.com
5
6
7
8
9
10
11
12
13
14
Sh. Mukesh Kr Sharma
Sh. H. Vyas
Sh. S.K. Mishra
Sh. A. C. Aggrawal
Sh. M.A. Khan
Sh. B. Prasad
Sh. Ashok Kumar
Sh Loveleen Singh
Sh. A. K Rathore
Sh. L.P. Kushwaha
DTL
DTL
DTL
DTL
DTL
DTL
DTL
DTL
DTL
DTL
9999533637
9999533631
9999533510
9999533636
9999533670
9999533663
9999533661
9999533659
9999533669
9999533631
harjiwan@yahoo.co.uk
skmishra@dtl.gov.in
ac.aggrawal@dtl.gov.in
ma.khan@dtl.gov.in
birendraprsd@gmail.com
dgm.tech@dtl.gov.in
dgmosdtl@gmail.com
ashokkurathore@yahoo.com
lpksbm@rediffmail.com
15
16
17
18
Sh. Pankaj Kumar Vijay
Sh. Ajay Kumar
Sh. Satinder S. Sondhi
Sh. Abhinav Shrivastava
Director (O)
In Chair
GM(T)
GM (Plg)
G.M.
(C&RA)
G.M. (O&M)
GM(T)
G.M. (Civil)
`
DGM(T)
DGM(T)
DGM(T)
DGM(T)
DTM(T)
DGM(O&M)
-I
Manager (T)
VP
AVP
Sr. Manager
DTL
BRPL
BRPL
BRPL
9999533929
9350683910
9312147009
9350134826
19
20
21
22
23
24
25
26
27
Sh. P.K. Gupta
Sh. V. Venugopal
Ms Kiran Saini
Sh. Sanjeev Kumar
Sh. N.S. Sagar
Sh. A.K. Joshi
Sh. Chaman Lal
Sh. K. S. Meena
Sh. J. Chatterjee
G.M. (SLDC)
DGM(SO)
DGM(T)
AM(T)
C. E (E)
ACE(E)
SE(E)
XEN(SO)
DGM
SLDC
SLDC
SLDC
SLDC
NDMC
NDMC
NDMC
NDMC
TPDDL
9999533626
9871093902
9999533639
9999533917
9899041848
9717241999
9810034499
9811203020
9818100625
28
29
30
Sh. Sanjay Banga
Sh. H. C. Sharma
Sh. Sunil Singh
TPDDL
TPDDL
TPDDL
9818100660
9818100751
9818100757
31
Sh. A.K. Srivastava
Sr. GM
HOD(Engg)
Head
(Operation)
Addl. V.P
BYPL
9350261972
pankajvijay@rediffmail.com
ajay.i.kumar@relianceada.com
satinder.sondhi@relianceada.com
abhinav.r.srivastava@relianceada.c
om
psdpvr2012@gmail.com
Venugopal.v1960@yahoo.co.in
ksdtl.10@gmail.com
Sanjeevkumar2474@gmail.com
chaman33@yahoo.co.in
meenaks24@rediffmail.com
Jayanta.chatterjee@tatapowerddl.com
sanjaybanga@ndpl.com
hc.sharma@tatapower.ddl.com